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Haptophyceae: Isochrysidales: Derepyxidaceae
Prymnesiida:

Spongomonas intestinum
(Cienkowski) Kent
Syn.: Phalansterium intestinum Cienkowski

Spongomonas Family: Two long flagella, 1-2 chloroplasts and 1-2 contractile vacuoles present (Starmach, 1985).
Genus: Cell body naked, colorless (without chloroplasts), a contractile vacuole present, colony embedded in a gelatinous matrix of various shape (Starmach, 1985).
Species: colony within a gelatinous matrix straight or curved (Starmach, 1985).

Spongomonas intestinum, cell body spherical-ellipsoidal 9 μm long, 7 μm wide, with two flagella of equal length (about 42 μm long), x 100, x 200, x 400, x 640, Iruma Park, Saitama Pref., Japan, February 2002 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Spongomonas intestinum Spongomonas intestinum Spongomonas intestinum Spongomonas intestinum Spongomonas intestinum Spongomonas intestinum Spongomonas intestinum Spongomonas intestinum
Spongomonas intestinum Spongomonas intestinum Spongomonas intestinum Spongomonas intestinum Spongomonas intestinum
Spongomonas intestinum Spongomonas intestinum Spongomonas intestinum Spongomonas intestinum
Spongomonas intestinum Spongomonas intestinum Spongomonas intestinum
Spongomonas intestinum Spongomonas intestinum Spongomonas intestinum

cf. Uroglena Ehrenberg: With connecting processes (Kudo, 1966).

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